Finding the Fourth Proportional to 10,238.47, 15,359.90 and 3,218.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.47 : 15,359.90 = 3,218.00 : x
2. Step 2: Convert to fraction form
   10,238.47/15,359.90 = 3,218.00/x
3. Step 3: Cross multiply
   10,238.47x = 15,359.90 × 3,218.00
4. Step 4: Simplify right side
   10,238.47x = 49,428,065.31
5. Step 5: Solve for x
   x = 49,428,065.31/10,238.47
6. Step 6: Final answer
   x = 4,827.68